Energy Dept. Pours Billions Into Power Grids but Warns It’s Not Enough

The Energy Department on Monday announced $1.3 billion to help build three large power lines across six states, part of a new gusher of money from Washington to upgrade America’s electric grids so they can handle more wind and solar power and better tolerate extreme weather.

But officials warned that money won’t be enough. In a major report published the same day, the Energy Department said that the nation’s vast network of transmission lines may need to expand by two-thirds or more by 2035 to meet President Biden’s goals to power the country with…